Jim Cramer names companies with credibility, like NXPI and AAPL, and those that don't have it, including FIT.

No currency is more valuable to investors than credibility, Jim Cramer told his Mad Money viewers Thursday. Some CEOs have it, others don't, Cramer said, but the companies of those that do are the stocks you buy into when the market declines like it has for the past eight days.

Cramer said that NXP Semiconductor (NXPI) , an Action Alerts PLUS holding, has credibility, especially when it purchased Freescale and diversified itself from just a cell phone-chip maker into autos and the Internet of things. That credibility was rewarded after Qualcomm (QCOM) offered to purchase the company.

Time Warner (TWX) also has credibility, rejecting a bid from Fox for $85 a share, only to receive a much better deal from AT&T (T) for $110 a share. Cramer said that Apple (AAPL) , another Action Alerts PLUS name, also has a ton of credibility, although you wouldn't know it by listening to all of the negativity.

Those without credibility include Fitbit (FIT) , which posted a horrendous quarter that sent shares plunging an astounding 33% in a single day. The same applies to GoPro (GPRO) , which unlike Apple, has proven to have products that aren't that special after all. Cramer added Occidental Petroleum (OXY) to the list, saying that this Action Alerts PLUS holding will be sold at the earliest opportunity after the company announced it's spending $2 billion on acreage in the Permian Basin it doesn't need.

Management matters, Cramer concluded, which is why investors must always remember a company's track record and whether it delivers on its promises.

For his "Executive Decision" segment, Cramer spoke with Strauss Zelnick, chairman and CEO of Take-Two Interactive (TTWO) , the video game maker that just posted a 15-cents-a-share earnings beat with a 21% increase in year-over-year revenues. Shares of Take-Two were up 7.7% on the day and are up more than 30% since Cramer last checked in back in May.

Zelnick said that video games have the same creative opportunities as movies did in the 1930s and that HD video games will soon become the norm. He said that "Mafia III," their latest release, is authentic, has a great soundtrack and sets a new standard for what cinematic video games can be.

Zelnick was also bullish on Take-Two's sports franchises, including "NBA 2K." He noted that sports games used to track the seasons they followed, but now, sports games are played year-round. He also reiterated a fall 2017 release for a highly anticipated "Red Dead" title.

As for Take-Two's gold standard, "Grand Theft Auto," Zelnick noted that "Grand Theft Auto 5" has already sold 70 million units to date and continues to sell very well.